Question

during which phase of mitosis do nuclear envelopes and the nucleoli reappear?
anaphase
metaphase
telophase
prophase

Explanation:

To solve this, we recall the phases of mitosis:

• Anaphase: Sister chromatids separate and move to opposite poles. Nuclear envelopes/nucleoli do not reappear here.
• Metaphase: Chromosomes align at the cell equator. No reappearance of nuclear structures.
• Telophase: This is the final phase of mitosis. The nuclear envelope reforms around each set of chromosomes, and nucleoli reappear as the cell prepares to divide into two daughter cells.
• Prophase: Nuclear envelope breaks down, nucleoli disappear, and chromosomes condense. So this is the opposite of what we need.

Answer:

C. Telophase